CS 6250 Exam | Computer Networks Exam Study Guide | Correctly Answered & Rated A+ | Latest 2025/2026

CS 6250 Exam | Computer Networks
Exam Study Guide | Correctly
Answered & Rated A+ | Latest
2025/2026
DNS Services Beyond Resolution
- Correct Answer - Mail exchange, service location, and DNSSEC
services.


DNS Hierarchy Structure
- Correct Answer - Root, TLD, authoritative servers for efficient domain
resolution.


Iterative vs. Recursive DNS Queries
- Correct Answer - Iterative: Asks multiple servers. Recursive: Asks until
resolution.


DNS Resource Record
- Correct Answer - Data in DNS database mapping domain names to IP
addresses.


DNS Message Format
- Correct Answer - Header, question, answer, authority, additional
sections.


IP Anycast

, - Correct Answer - Routing technique directing traffic to the nearest of
multiple servers.


HTTP Redirection
- Correct Answer - Redirecting web requests to a different URL.


Describe Osi Layers
- Correct Answer - ntohing


Layered architecture advantages and disadvantages
- Correct Answer - AD: Organizing network functions into distinct layers
for efficiency, robustness and reliability.
DIS: dependencies on other layers. Additional overhead going through
multiple layers


OSI model vs 5 layered model
- Correct Answer - 5 layer: Physical, data link, Network, Transport,
application
OSI: Physical, data link, Network, Transport, Session, Presentation,
Application


Sockets
- Correct Answer - Interface between application layer and transport
layers


Encapsulation
- Correct Answer - Process of adding headers/trailers to data at each
layer